/*
 * Copyright 1999-2017 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.polardbx.druid.sql.ast.statement;

import com.alibaba.polardbx.druid.sql.ast.SQLExpr;
import com.alibaba.polardbx.druid.sql.ast.SQLName;
import com.alibaba.polardbx.druid.sql.ast.SQLStatementImpl;
import com.alibaba.polardbx.druid.sql.ast.SqlType;
import com.alibaba.polardbx.druid.sql.ast.expr.SQLIdentifierExpr;
import com.alibaba.polardbx.druid.sql.visitor.SQLASTVisitor;

import java.util.ArrayList;
import java.util.List;

/**
 * @author zz [455910092@qq.com]
 */
public class SQLOpenStatement extends SQLStatementImpl {

    //cursor name
    private SQLName cursorName;

    private final List<SQLName> columns = new ArrayList<SQLName>();

    private SQLExpr forExpr;

    private final List<SQLExpr> using = new ArrayList<SQLExpr>();

    public SQLOpenStatement() {

    }

    public SQLName getCursorName() {
        return cursorName;
    }

    public void setCursorName(String cursorName) {
        setCursorName(new SQLIdentifierExpr(cursorName));
    }

    public void setCursorName(SQLName cursorName) {
        if (cursorName != null) {
            cursorName.setParent(this);
        }
        this.cursorName = cursorName;
    }

    @Override
    protected void accept0(SQLASTVisitor visitor) {
        if (visitor.visit(this)) {
            acceptChild(visitor, cursorName);
            acceptChild(visitor, forExpr);
            acceptChild(visitor, columns);
        }
        visitor.endVisit(this);
    }

    public SQLExpr getFor() {
        return forExpr;
    }

    public void setFor(SQLExpr forExpr) {
        if (forExpr != null) {
            forExpr.setParent(this);
        }
        this.forExpr = forExpr;
    }

    public List<SQLName> getColumns() {
        return columns;
    }

    public List<SQLExpr> getUsing() {
        return using;
    }

    @Override
    public SqlType getSqlType() {
        return null;
    }
}
